Thanks for the kind words! :)
To unlock Lyx you need to have Claire in the Manor. To get Claire, you need to have conquered the Bridge and the Apartments and then done the nighttime event on the Bridge (with the Chitterings).
Once you've conquered those two locations and done the Chitterings event, Claire will appear one night when you sleep. After that, Lyx will appear some time when you sleep and you will get a Lead. Follow the the lead to unlock Lyx, which in turn will unlock more events.
Hope that helps!